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Finding the Fourth Proportional to 417.15, 624.66 and 233.69

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Solution

The fourth proportional to 417.15, 624.66 and 233.69 is: 349.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.15 : 624.66 = 233.69 : x
  2. Step 2: Convert to fraction form
    417.15/624.66 = 233.69/x
  3. Step 3: Cross multiply
    417.15x = 624.66 × 233.69
  4. Step 4: Simplify right side
    417.15x = 145,974.11
  5. Step 5: Solve for x
    x = 145,974.11/417.15
  6. Step 6: Final answer
    x = 349.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.